Typewriting machine



Aug. 25, 1925. J. WALDHEIM TYPEWRITING MACHINE Filed Sept. 15, 1921 2 Sheets-Sheet 1 Aug. 25, 1925.

J. WALDHEIM TYPEWRITING momma:

Filed Sept. 15, is 2 Sheets-Sheet 2 E it iililiiu'l lillsCtiit-iiie Patented Aug. 25, 1925.

UNITED STATES JO'HN WALDHEIM, OF ELIZABETH, NEW JERSEY, ASSIGNOR T UNDERWOOD TYPE- WRITEB COMPANY, OF NEVJ YORK, N. Y., A CORPORATION OF DELAWARE.

TYPEWRITING MACHINE.

Application filed September 15, 1921.

To all whom it may concern:

Be it known that 1, JOHN VVALDHEIM, a citizen of the United States, residing in Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Typewriting Machines, of which the following is a specification.

This invention relates to sound-deadening casing or cabinets for typewriting machines. It is of the same general type as the cabinet disclosed in the application of Burnham C. Stickney, No. 429,617, filed December 10, 1920 (now Patent No. 1,519,224, dated December 16, 1924), and in my application, No. 466,820, filed May 4, 1921 (now Patent No. 1,519,645, dated December 16, 1924), and comprises a body-part and a cover-part hinged to said body-part, the latter being provided with a removable front wall to permit the machine to be inserted into the casing. To permit the ordinary typing operations to be carried on without removing the casing or raising the cover-part, the banks of keys extend forwardly from the casing and a slot is provided at the front between the body-part and the cover-part through which the various carriage-operating levers extend.

It is one feature of this invention to provide a cabinet which shall have a maximum capacity for the overhanging edge of a work-sheet on the carriage. To this end, lateral extensions or pockets are provided at the rear and sides of the cabinet, said pockets extending down to the bottom of the base. By s0 constructing the pockets, separate floors, such as are required when the pockets do not extend down to the, base, are avoided, thus simplifying the construction of the cabinet and providing for a longer work-sheet.

Another feature of the invention resides in the provision of a floor forming part of the cabinet, said floor being composed'of sound-deadening material and having holes therein into which the feet of the machine may be placed to assist in locating the machine within the casing.

The cabinet is also provided with lateral extensions or pockets in which the carriage operates. It is a further feature of the invention to so construct the cabinet that the front walls of the work-sheet pockets, the side walls of the main portion of the Serial No. 500,841.

cabinet and the floor of the carriage pockets merge with each other, thus permitting said walls to be formed by a minimum amount of material, and giving a more pleasing appearance to the cabinet.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a plan view of the sound-deadening casing sectioned horizontally.

Figure 2 is a front elevation of the casing vertically sectioned.

Figure 3 is a side view of the casing applied to an Underwood standard typewriting machine, parts of the casing having been broken away.

Figure 4 is a perspective view of one form of casing.

Figure 5 is a perspective view of another form of casing.

Figure 6 is a perspective view of a third form of casing.

Figure 7 is a perspective view-of a fourth form of casing.

The Underwood standard typewriting machine comprises a main frame 10 having supporting feet 11, said frame having a forward extension 12 in which are positioned banks of type-keys 13 which operate type-bars, not shown, to cause types carried by the type-bars to print against a platen 16. Said platen is journaled in a platenframe 17 forming part of a carriage 18 mounted for letter-feeding movement on a front rail 19, and a rear rail 20 on the main frame. The carriage is provided with various forwardly-extending operating levers, such as line-space lever 21, carriage-return finger-piece 22, and carriage-release lever 23.

For deadening the sounds arising in the typing operation, there is provided a sounddeadening casing or cabinet comprising a body-part and a cover-part 31 hinged to the rear of said body-part at 32. Said body-part comprises a rear wall 35, side walls 36 having front flanges 37 connected near their lower edges by a tie-bar 38, a front plate 39 mounted on said flanges 37 and removable to permit the insertion of the machine into the casing, and a base 40 upon which said machine is supported. After the machine has been inserted into the casing, the forward extension 12 extends forwardly from the casing to expose the banks of keys l3 and permit operation thereof from outside the casing. To decrease the weight of the casing, the base l-O is preferably latticed and comprises longitudinal and lateral members 42 and 43, re spectively. The feet 11 of the machine preferably rest in cups i l in a layer 425 of felt, linoleum, fibre, wood or other sound-death ening material supported upon the latticed base 4C0, said felt layer closing all outlets for sound at the bottom of the casing and preventing transmission of sound vibrations through the casing, the cups assisting to locate the machine within the casing. The casing may, if desired, be supported upon feet 46, which may be secured to the base or floor thereof.

The body-partthus completely encloses the machine, with the exception of the forward extension 12, at the bottom, sides, rear and front. To enclose the machine at the top, there is provided the cover-part 31 having a rear wall 50, said wall having a forward and downward extension 51 terminating in a short front wall f0 permit the machine in the interior of the casing to be viewed, the extension 51 may be provit ed with a transparent plate or window 5%. To enable the carriage to be operated from outside of the casing, the front wall 52 terminates some distance above the top of the front plate 39 to form a slot through which various carriage-o-perating levers, such as line-space lever 21, carriage-return fingerpiece 22, and carriagerelease lever 23, e1 tend. All of the slot not actually occupied by these levers may be closed by co-operating sound-deadening cushions 55 and 56 mounted on the front wall 52 and front plate 39, respectively. The side walls 60 of the cover-part overlap the side walls of the body-part to form effective closures at the sides of the casing.

It is desirable that the casing fit the machine closely and yetprovide ample space for the travel of the carriage to the right and left and within which the overhanging ends of worksheets carried by said carriage may operate freely. For this purpose, the body-part of the casing which comprises a main or central section 64: lits the machine closely and is provided with lateral extensions or pockets 65 at its upper side edges to the right and left, in which the carriage may travel. For receiv ng the overhanging ends of work-sheets ncsii'ioned in the carriage, the body-part may be provided with vertical extensions or pockets 66 at its rear edges, said pockets extending outwardly to the right and left substantially as far as extensions 65, and extending dmvnwardly to the same depth as the body-part. T he worle sheets will thus operate freely in pockets 66 in any position of the carriage, and the comparatively large depth of said pockets will permit the use of long work-sheets.

To give great-er strength to the casing and use a minimum amount of material, and also to improve its appearance, the walls or limitations of the carriage pockets 65, worksheet pockets 66 and the main section 6-1 may merge gradually into each other. By an inspection of Figure 4, it will be seen that the side walls of the main section, the front walls of the work-sheet pockets 66, and the floors of the carriage pockets 6-1"; merge into each other, thus forming indentations 70 in the low forward corners of the casing, the contour of each indentation corresponding to the surface of one-quarter of a hemisphere, said surfaces being substantially inrlined downwardly, inwardly and rear wardly from the front corners.

Tn a second form of the casing (Figure each indentation '70 may be formed by two intersecting, quarter cylindrical surfaces 71 and 72 disposed at right angles to each other.

in a third form of the casing (Figure 6), each indentation 70 may be formed by a quarter cylindrical surface 73, horizontally disposed and intersected by a flat vertical surface close to the side of the machine.

In a fourth form of the casing (Figure 7), the indentations 70 are each formed by a uarter part of a cylindrical surface 75, vertically disposed, and intersected by a horizontal surface 76 forming the floor of he carriage pocket.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, 1 claim:

1. A sound-deadening casing for a typewriting machine, said casing comprising rear, front and side walls, a base of sounddeadening material secured to all of said walls, said base including a flexible latticed reinforcing frame to enable it to sustain the weight of the casing and supporting at ached to the base.

2. A sound-deadening casing for a typewriting machine, said casing comprising side walls, a base of sound-deadening material secured thereto, supporting legs attached to the base, said base comprising a latticed reinforcing frame to enable it to sartain the weight of the casing, and means on the base for locating the feet of the type writer directly over the casing-supporting legs.

3. A sound-deadening casing for enclosing a typewriting machine, said casing comprising a base and. typewriter support including a closure of sound-deadening material for the bottom of the casing, said base also including a non-vibrant open reinforcing" frame r dly fixed to the walls of the casing, and spaced yielding members he neath said frame for yieldingly supporting the casing out of contact with the desk-top.

f. A sound-deadening casing for a typewriting machine having supporting feet, said casing comprising a latticed base, and a layer of sound-deadening material for closing the openings in said base to prevent the escape of sound therethrough, said machine resting on said layer of sound-deadening material, said layer of sound-deadening material being provided with positioning cups embodied therein for receiving said feet to determine a definite operative position of the machine with reference to the casing.

5. A sound-deadening cabinet for a typewriting machine, said cabinet comprising inwardly-extending flanges at the bottom edges thereof, apad of sound-deadening material on said flanges to support the machine, cross-bars between the flanges, said cross-bars being so located that. the feet of the machine may rest above them, and means for locating the feet of the machine above said cross-bars.

6. A sound-subduing support for a typewriting machine comprising a horizontal latticed framework upon which the machine is borne, and yielding means for supporting said framework out of contact with the table or desk on which it rests.

JOHN WALDHEIM. 

